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APOBEC3通过IL-1A/AP-1信号传递促进状分化
Michael S Sturdivant1,2, Andrew S Truong1,2, Mi Zhou1
1Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Nature communications
|December 13, 2025
概括
APOBEC3酶通过IL-1α信号传递驱动尿路细胞癌的进展和状分化. 这一发现突出了APOBEC3AA.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 丁脱氨酶的APOBEC3 (A3) 家族与各种癌症的突变发生有关.
- 膀泌尿瘤 (UC) 呈现出与A3活性相关的显著突变负担,但其功能作用仍未得到充分研究.
研究的目的:
- 调查APOBEC3在膀癌进展和状分化中的功能作用.
- 阐明APOBEC3通过哪些分子机制影响尿癌表型.
主要方法:
- 开发一种基因工程小鼠模型 (UPPA),条件淘汰Pten和Trp53,并过度表达小鼠Apobec3.
- 对UPPA小鼠膀瘤的分析,包括对人类UC样本的大量RNA测序.
- 单细胞和空间转录组学对人类UC数据的应用.
主要成果:
- 在UPPA模型中,老鼠Apobec3的过度表达促进了瘤进展和状细胞转基因分化.
- APOBEC3驱动的状分化是由IL-1α信号传递和下游AP-1转录因子激活的介导.
- 人类APOBEC3A被确定为唯一的APOBEC3家族成员,与UC中的状分化相关,经过转录组分析证实.
结论:
- 小鼠Apobec3和人类APOBEC3A在泌尿腺癌中促进状分化.
- IL-1α信号传递是膀癌中APOBEC3诱导的转基因差异化的一个关键媒介.
- 针对可接受FDA批准的治疗方法的IL-1α信号传递,可能为APOBEC3驱动的UC提供治疗策略.
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